我国是一个煤炭资源丰富的国家,目前,我国火电厂排放灰渣量每年达4000万吨,利用率仅占10%左右。粉煤灰主要用于水泥、砖、砌块、陶粒、混凝土掺合料等,其中占粉煤灰总量30%以上的“空心微珠”尚未开发利用。国务院技术经济研究中心把粉煤灰当作一项重要新资源进行开发综合利用,其中空心微珠是一项重要利用途径。 China is a country rich in coal resources. At present, the amount of ash discharged from thermal power plants in China is 40 million tons per year, and the utilization rate only accounts for about 10%. Fly ash is mainly used for cement, bricks, blocks, ceramsites, and concrete admixtures, among which “cylinder microspheres”, which account for more than 30% of the total amount of fly ash, have not yet been developed and utilized. The State Council’s Technical and Economic Research Center takes fly ash as an important new resource for development and comprehensive utilization. Among them, hollow microspheres are an important way of utilization.